Resonant Behaviors of Massive Scalar Fields in Black Hole Spacetimes

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

We investigate dominant late-time tail behaviors of massive scalar fields in black-hole spacetimes. It is shown that the oscillatory tail of the scalar fields has the decay rate of t-5/6 at asymptotically late times. The physical mechanism by which the asymptotic t-5/6 tail is generated and the relation between the field mass and the time scale when the tail begins to dominate, are discussed in terms of resonance backscattering due to spacetime curvature. We also discuss the universality of the decay law of t-5/6.

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